Status: New
Owner: liuj...@google.com
Labels: Type-Defect Priority-Medium
New issue 661 by wbenf...@gmail.com: Python: memory leak in
protobuf.reflection.ParseMessage()
http://code.google.com/p/protobuf/issues/detail?id=661
What steps will reproduce the problem?
import google
import google.protobuf
import google.protobuf.descriptor_pb2
descriptor = google.protobuf.descriptor_pb2.DescriptorProto.DESCRIPTOR
while True:
google.protobuf.reflection.ParseMessage(descriptor, '')
What is the expected output? What do you see instead?
Expected: infinite loop with constant memory usage
Observed: infinite loop with rapidly growing memory usage
What version of the product are you using? On what operating system?
protobuf 2.5.0
python 2.7.3
Scientific Linux 6.5 (x86_64)
Please provide any additional information below.
The code above is a minimal standalone example (I don't really want to
construct an endless series of DescriptorProto objects). In reality I'm
calling ParseMessage with a descriptor which was read from the input
stream, but the outcome is the same: memory usage grows linearly with the
number of messages parsed.
I can't find anything in the documentation to suggest that ParseMessage
requires the user to take special action to release resources.
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